Small clock for blinds?

[Diggslick]

I posting to find out if anyone knows of a good, simple alarm clock/stop watch that will fit in a poker case. I play in a series of non-regular home games/tournaments. Most times the blinds are upped when someone goes out (somewhat defeating the point of blinds) I'm looking for a small clock that can fit in a poker case(even at the expense of a deck.) that can easily be reset in a count down timer format and will beep/ ring when it goes off. IT doesn't need to be poker specific.